Statistics for occurrence #1 of “Arkansas River” in entry colorado of Harper's Encyclopedia of United States History:
...south, organized as a Territory Feb. 28, 1861, from parts of its several contiguous neighbors, and admitted to the Union July 4, 1876, hence known as the Centennial State.
The portion north of the Arkansas River , and east of the Rocky Mountains, was included in the Louisiana purchase of 1803 and the remainder in the Mexican cession of 1848.
Francis Vasquez de Coronado is believed to have been the first Eur...
| Max. Freq. | Min. Freq. | ||||||
|---|---|---|---|---|---|---|---|
| Entity | Corpus | Doc | Corpus | Doc | |||
† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.